Months go, I reviewed Windows Vista, and concluded: "All in all, I am impressed by Windows Vista [...]. Windows Vista is better than XP, and definitely more than just an improved look as many say." After 5 months of usage, it is time to put that statement into perspective.

That's a horrible example. SACD doesn't play on Linux, XP, or the Mac OS. In the example you quoted, Vista is allowing SACD to play over a secure connection and (presumably) through attached speakers but not over an unsecure connection whereas NO OTHER OS IN THE WORLD LETS YOU PLAY SACD AT ALL.

By definition that is not obtrusive in comparison to anything else currently on the market.

"Vista is allowing SACD to play over a secure connection and (presumably) through attached speakers but not over an unsecure connection whereas"

If Vista regards the speakers as "insecure" for playing the "premium content", Vista would disable it. I guess MS decides what speakers you will use, it is not your computer, it is Microsoft's computer.

"NO OTHER OS IN THE WORLD LETS YOU PLAY SACD AT ALL."

Who cares? Who wants a DRM infected SACD?

"By definition that is not obtrusive in comparison to anything else currently on the market."

Disabling the use of "premium content" because MS does not like your speakers is not obtrusive?